Pacific Scientific Servo Drive Selection Guide

3.2 Power level

The PC3400 series covers a continuous power range of 0.21kW to 6.8kW, with a peak power of up to 13.6kW. Specific models include:

Model Continuous current (A rms) Peak current (A rms) Peak time (s) Input power supply

PC3403A 3 6 2 90-253V AC single-phase/three-phase

PC3406A 6 12 2 90-253V AC single-phase/three-phase

PC3410A 10 20 1 90-253V AC single-phase/three-phase

PC3420A 20 40 0.5 90-253V AC single-phase/three-phase

PC3402D 2.5 5 1 20-74V DC

PC3405D 5 10 1 20-74V DC

The driver with AC power supply integrates power supply and brake chopper; The DC version is more compact and suitable for users who already have a DC power supply. The control power supply (24-48V DC) is isolated from the main power supply and can maintain logic power supply when the main power supply is disconnected.

3.3 Key Performance and Functionality

Control algorithm: Advanced Space Vector Modulation algorithm is adopted to improve voltage utilization efficiency.

I/O configuration:

2-channel differential ± 10V analog input (14 bits)

5-channel programmable digital input (4.5-26.5V, optocoupler isolation)

2-channel high-speed digital input (<1 μ s response)

1-channel registration input (<1 μ s)

2-channel programmable digital output (30V/35mA)

1 driver normal/brake relay output (100V/1A)

Encoder simulation output (A, B, Z)

Optional expansion I/O card: adding 16 inputs and 8 outputs.

Programming software: ToolPAC (Windows platform), supports point and click programming, built-in digital oscilloscope function, can graphically display waveforms such as speed, current, position error, etc. Axis Setup Wizard and Tuning Wizard make debugging extremely simple.

Feedback options: Resolver, Hall, Encoder (with Hall or Z-channel commutation), supports dual feedback (main feedback+auxiliary encoder).

Environment and certification: Operating temperature 0-40 ° C, storage -40-70 ° C, humidity 0-95%, no condensation. UL 508C certification (DC version pending), CE compliance.

3.4 Typical Applications

The PC3400 series is particularly suitable for OEM equipment that requires independent motion control and is cost sensitive. For example: SMT machine (high-speed picking and placing), wafer inspection table (high-precision positioning), automatic palletizer (multi-stage speed control), robot joints (smooth acceleration and deceleration).

PC800 series: Compact and cost-effective servo drive

4.1 Product positioning

The PC800 series is a fully digital servo drive designed by Pacific Scientific for small and medium power applications that are cost sensitive and have strict volume requirements. Its volume has been reduced by 40% compared to the previous generation 900 series, but it still maintains DSP full digital control, Resolver feedback, and rich command interfaces. The PC800 driver is equipped with a preset motion contour generator, which can independently complete incremental, absolute, zeroing, and registration movements without the need for an external controller. Meanwhile, the PC840 model supports SERCOS fiber optic networks, making it easy to build distributed multi axis systems.

4.2 Power level

Model Continuous current (A rms) Peak current (A rms) Continuous power (kW) Peak power (kW)

PC8x2 3.75 7.5 1.1 2.25

PC8x3 5.3 10.6 1.5 4.5

PC8x4 10.6 21.2 3.0 9.0

Input power supply: 90-264V AC single-phase or three-phase (240V nominal), built-in power supply and brake chopper. Control logic power supply isolated from main power supply (22-52V DC, optional). Supports forced air cooling at 50 ° C or natural cooling at 40 ° C.

4.3 Key Characteristics

Preset motion: Through an internal contour generator, users can store multiple preset positions and speeds, which can be triggered through I/O selection without programming.

I/O configuration:

6-way optocoupler isolated programmable input (user configurable)

3-channel optocoupler isolated programmable output

1 relay output (30V DC)

Differential ± 10V analog input

Single ended ± 5V analog input

2-channel ± 5V analog output

Encoder simulation output (A, B, Z, resolution up to 16384 PPR)

Encoder input (orthogonal/stepper/directional)

+5V/200mA user output,+24V/100mA auxiliary power supply (for I/O use)

Software tool: PC830 Tools (Windows platform), including digital oscilloscope, automatic tuning, and diagnostic functions.

Feedback: Resolver standard, optional Hall/encoder (for linear motors, etc.).

SERCOS option: The PC840 model integrates SERCON816 ASIC, supporting communication rates up to 16 kHz for real-time distributed control.

Size and Installation: Width only 60mm (PC8x2) to 114mm (PC8x4), depth 218-229mm, weight 3.2-6.6kg. Optional terminal block adapter simplifies wiring.

4.4 Application Scenarios

The PC800 series is particularly suitable for packaging machinery (horizontal and vertical sealing), electronic assembly (small XY table), material handling (conveyor sorting), and multi axis collaborative equipment that requires SERCOS network (such as color group synchronization in printing machines).

SC/SCE900 Series: Modular and Scalable High Performance Servo Drivers

5.1 Product positioning

The SC/SCE900 series is Pacific Scientific's highest end fully digital servo drive platform, featuring a modular design that allows for flexible upgrades from basic serial port configuration to SERCOS fiber optic network and single axis programmable control by inserting different tabs (OC/OE930, 940, 950). The SCE900 model is specifically designed for the European and global markets, with a main power input range of 180-528V AC (three-phase), which can be directly compatible with 400V/480V industrial power grids. It also has a built-in CE filter and does not require an external isolation transformer. The SC900 model is suitable for 240V AC systems.